Care and safety:
Precaution: Don't turn on the switch when missing thermistor's safeguard cover and water, dust spill over the chamber.
Turn off switch immediately & do not adjust temperature should electricity leakage might sign doubtful
Switch OFF when stop using, turn temperature controll button anticlockwise to OFF point (0oC).
Turn off Aptomat Protection, unplug the power source when stop working when stop using.